路基路面几何尺寸及路面厚度检测.pdf

路基路面几何尺寸及路面厚度检测一、路基路面现场测试随机选点方法对公路路基路面各个层次进行各种测定时，为采取代表性试验数据，往往用随机取样选点的办法确定测点区间、测定断面、测定位置。随机取样选点是按照数理统计原理，在路基路面现场测定时决定区间、测定断面、测点位置的方法。也可以采用Excel电子表格等软件或计算器中的随机函数代替模数来计算测点位置。随机取样选点法需要的材料有：钢尺、皮尺、硬纸片（共28块，编号1～28，每块大小2.5cm×2.5cm，装在一个布袋内）、骰子（2个）、毛刷、粉笔等。1、测定断面或测定区间的确定方法检测路段可以是一个作业段、一天完成的路段或路线全程。在路基、路面工程检查验收时，通常取1km为一个检测路段。下面要主介绍测定断面的确定步骤。（检测路段的确定与此相同）①将检测路段按桩号间距（一般为20m）分成若干个断面，一次编号为1、2、3、„„，T，总的断面数为T个。②从从布袋中随机摸出一块硬纸片，硬纸片上的号数即为“一般取样的随机数表”中的栏号。③按照检测频度的要求，确定测定断面的取样总数n。依次找出与A列中01、02、„„、n对应的B列中的值，共n对对应的A、B值，当n>30时，应分次进行。④将n个B值与总的断面数T相乘，四舍五入成整数，即得到n个断面的编号。⑤查断面编号对应的桩号，即为拟检测的断面。一般取样的随机数表（前五栏）栏号1栏号2栏号3栏号4栏号5ABCABCABCABCABC150.0330.578050.0480.879210.0130.220180.0890.716170.0240.863210.1010.300170.0740.156300.0360.853100.1020.330240.0600.032230.1290.916180.1020.191100.0520.746140.1110.925260.0740.639300.1580.434060.1050.257250.0610.954280.1270.840070.1670.512240.1770.397280.1790.447290.0620.507240.1320.271280.1940.776110.2020.271260.1870.844180.0870.887190.2850.089030.2190.166160.2040.012040.1880.482240.1050.849010.3260.037290.2640.284080.2080.418020.2080.577070.1390.159300.3340.938110.2820.262190.2110.798030.2140.402010.1750.647220.4050.295140.3790.994290.2330.070070.2450.080230.1960.873050.4210.282130.3940.405070.2600.073150.2480.831260.2400.981130.4510.212060.4100.157170.2620.308290.2610.037140.2550.374020.4610.023150.4380.700250.2710.180300.3020.883060.3100.043060.4870.539220.4530.635060.3020.672210.3180.088110.3160.653080.4970.396210.4720.824010.4090.406110.3760.936130.3240.585250.5030.893050.4880.118130.5070.693140.4300.814120.3510.275150.5940.603010.5250.222020.5750.654270.4380.676200.3710.535270.6200.894120.5610.980180.5910.318080.4670.205080.4090.495210.6290.841080.6520.508200.6100.821090.4740.138160.4450.740170.6910.583180.6680.271120.6310.597100.4920.474030.4940.929090.7080.689300.7360.634270.6510.281130.4980.892270.5430.387070.7090.012020.7630.253040.6610.953190.5110.520170.6250.171110.7140.049230.8040.140220.6920.089230.5910.770020.6990.073230.7200.695250.8280.425050.7